CVE-2026-56315

CRITICALPre-NVD 9.89.8—
EchelonGraph scoreHIGH confidence

Score 9.8 from GitHub Security Advisory (severity: CRITICAL) published 2026-06-23. a secondary CVSS source baseline 9.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 3 sources updated this weekElevated
9.8
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS: 1%CVSS: 9.8Exploit: NoneExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

picklescan before 1.0.4 fails to block at least seven Python standard library modules (including uuid, _osx_support, _aix_support, _pyrepl.pager, and imaplib) exposing eight functions that provide direct arbitrary command execution. Attackers can craft malicious pickle files importing these unblocked modules to achieve remote code execution while bypassing picklescan's safety validation entirely.

CVSS v3
9.8
EG Score
9.8(high)
EPSS
50.7%
KEV
Not listed

Published

June 23, 2026

Last Modified

June 23, 2026

Advisory Details (2)

Auto-updated Jul 1, 2026
🔬 Proof of concept available. Patch available. Sources: github.
github Patch Available🟡 PoC Available

Multiple stdlib modules with direct RCE not in blocklist · Advisory · mmaitre314/picklescan · GitHub

https://github.com/mmaitre314/picklescan/security/advisories/GHSA-g38g-8gr9-h9xp
generic

picklescan - Remote Code Execution via Unblocked Standard Library Modules | Advisories | VulnCheck

https://www.vulncheck.com/advisories/picklescan-remote-code-execution-via-unblocked-standard-library-modules

Vendor Advisories for CVE-2026-56315(1)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 96× in last 7d / 188× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

Showing the most recent 100 of 188 total refreshes for this CVE.

  1. 2026-07-07 07:58 UTCEG score recompute
  2. 2026-07-07 07:58 UTCGHSA enrichment
  3. 2026-07-07 04:01 UTCEG score recompute
  4. 2026-07-07 04:01 UTCGHSA enrichment
  5. 2026-07-07 00:03 UTCEG score recompute
  6. 2026-07-07 00:03 UTCGHSA enrichment
  7. 2026-07-06 20:11 UTCEG score recompute
  8. 2026-07-06 20:11 UTCGHSA enrichment
  9. 2026-07-06 16:27 UTCEPSS rescore
  10. 2026-07-06 16:27 UTCEPSS rescore
  11. 2026-07-06 15:30 UTCEG score recompute
  12. 2026-07-06 15:30 UTCGHSA enrichment
  13. 2026-07-06 11:23 UTCEG score recompute
  14. 2026-07-06 11:23 UTCGHSA enrichment
  15. 2026-07-06 07:31 UTCEG score recompute
  16. 2026-07-06 07:31 UTCGHSA enrichment
  17. 2026-07-06 03:38 UTCEG score recompute
  18. 2026-07-06 03:38 UTCGHSA enrichment
  19. 2026-07-06 02:23 UTCEPSS rescore
  20. 2026-07-06 02:23 UTCEPSS rescore
  21. 2026-07-05 23:47 UTCEG score recompute
  22. 2026-07-05 23:47 UTCGHSA enrichment
  23. 2026-07-05 19:55 UTCEG score recompute
  24. 2026-07-05 19:55 UTCGHSA enrichment
  25. 2026-07-05 16:04 UTCEG score recompute
Show 75 more
  1. 2026-07-05 16:04 UTCGHSA enrichment
  2. 2026-07-05 12:13 UTCEG score recompute
  3. 2026-07-05 12:13 UTCGHSA enrichment
  4. 2026-07-05 08:22 UTCEG score recompute
  5. 2026-07-05 08:22 UTCGHSA enrichment
  6. 2026-07-05 04:31 UTCEG score recompute
  7. 2026-07-05 04:31 UTCGHSA enrichment
  8. 2026-07-05 02:31 UTCEPSS rescore
  9. 2026-07-05 02:30 UTCEPSS rescore
  10. 2026-07-05 00:35 UTCEG score recompute
  11. 2026-07-05 00:35 UTCGHSA enrichment
  12. 2026-07-04 20:43 UTCEG score recompute
  13. 2026-07-04 20:43 UTCGHSA enrichment
  14. 2026-07-04 16:51 UTCEG score recompute
  15. 2026-07-04 16:51 UTCGHSA enrichment
  16. 2026-07-04 12:45 UTCEG score recompute
  17. 2026-07-04 12:45 UTCGHSA enrichment
  18. 2026-07-04 08:53 UTCEG score recompute
  19. 2026-07-04 08:53 UTCGHSA enrichment
  20. 2026-07-04 06:31 UTCEPSS rescore
  21. 2026-07-04 06:31 UTCEPSS rescore
  22. 2026-07-04 05:02 UTCEG score recompute
  23. 2026-07-04 05:01 UTCGHSA enrichment
  24. 2026-07-04 01:06 UTCEG score recompute
  25. 2026-07-04 01:06 UTCGHSA enrichment
  26. 2026-07-03 21:13 UTCEG score recompute
  27. 2026-07-03 21:13 UTCGHSA enrichment
  28. 2026-07-03 17:22 UTCEG score recompute
  29. 2026-07-03 17:22 UTCGHSA enrichment
  30. 2026-07-03 13:31 UTCEG score recompute
  31. 2026-07-03 13:31 UTCGHSA enrichment
  32. 2026-07-03 09:40 UTCEG score recompute
  33. 2026-07-03 09:40 UTCGHSA enrichment
  34. 2026-07-03 05:49 UTCEG score recompute
  35. 2026-07-03 05:49 UTCGHSA enrichment
  36. 2026-07-03 01:55 UTCEG score recompute
  37. 2026-07-03 01:55 UTCGHSA enrichment
  38. 2026-07-02 22:03 UTCEG score recompute
  39. 2026-07-02 22:03 UTCGHSA enrichment
  40. 2026-07-02 18:11 UTCEG score recompute
  41. 2026-07-02 18:11 UTCGHSA enrichment
  42. 2026-07-02 14:18 UTCEG score recompute
  43. 2026-07-02 14:18 UTCGHSA enrichment
  44. 2026-07-02 10:27 UTCEG score recompute
  45. 2026-07-02 10:27 UTCGHSA enrichment
  46. 2026-07-02 06:36 UTCEG score recompute
  47. 2026-07-02 06:36 UTCGHSA enrichment
  48. 2026-07-02 02:45 UTCEG score recompute
  49. 2026-07-02 02:45 UTCGHSA enrichment
  50. 2026-07-01 22:54 UTCEG score recompute
  51. 2026-07-01 22:53 UTCGHSA enrichment
  52. 2026-07-01 19:01 UTCEG score recompute
  53. 2026-07-01 19:01 UTCGHSA enrichment
  54. 2026-07-01 15:10 UTCEG score recompute
  55. 2026-07-01 15:10 UTCGHSA enrichment
  56. 2026-07-01 15:07 UTCEPSS rescore
  57. 2026-07-01 11:19 UTCEG score recompute
  58. 2026-07-01 11:19 UTCGHSA enrichment
  59. 2026-07-01 07:28 UTCEG score recompute
  60. 2026-07-01 07:28 UTCGHSA enrichment
  61. 2026-07-01 03:37 UTCEG score recompute
  62. 2026-07-01 03:37 UTCGHSA enrichment
  63. 2026-06-30 23:46 UTCEG score recompute
  64. 2026-06-30 23:46 UTCGHSA enrichment
  65. 2026-06-30 23:22 UTCEPSS rescore
  66. 2026-06-30 19:41 UTCEG score recompute
  67. 2026-06-30 19:41 UTCGHSA enrichment
  68. 2026-06-30 15:49 UTCEG score recompute
  69. 2026-06-30 15:49 UTCGHSA enrichment
  70. 2026-06-30 11:55 UTCEG score recompute
  71. 2026-06-30 11:55 UTCGHSA enrichment
  72. 2026-06-30 08:01 UTCEG score recompute
  73. 2026-06-30 08:01 UTCGHSA enrichment
  74. 2026-06-30 04:10 UTCEG score recompute
  75. 2026-06-30 04:10 UTCGHSA enrichment

Frequently asked(5)

What is CVE-2026-56315?
CVE-2026-56315 is a critical vulnerability published on June 23, 2026. picklescan before 1.0.4 fails to block at least seven Python standard library modules (including uuid, osxsupport, aixsupport, _pyrepl.pager, and imaplib) exposing eight functions that provide direct arbitrary command execution. Attackers can craft malicious pickle files importing these unblocked…
When was CVE-2026-56315 disclosed?
CVE-2026-56315 was first published in the National Vulnerability Database on June 23, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-56315 actively exploited?
CVE-2026-56315 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 50.7% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2026-56315?
CVE-2026-56315 has a CVSS v3 base score of 9.8 (NVD).
How do I remediate CVE-2026-56315?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-56315, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

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